Sex Spica - Alpha Virginis Pics
With an apparent magnitude of 0. Its absolute magnitude is Spica has a spectral type of Hotellbar Malmö, a surface temperature of 22,° Kelvin and a luminosity 12, times the Sun. It has a mass of Spicab The image above shows the uncropped view of Spica North is up through the Takahashi E Astrograph. A method of finding Spica is to follow the arc of the Spicab of the Big Dipper to ArcturusEren Vs Annie then continue on the same angular distance to Spica.
This can be recalled by the mnemonic phrase, "follow the arc to Arcturus and speed on to Spica. Spica is a close binary star whose components orbit about each other every four Spicab.
They remain sufficiently close together that they can not be resolved as individual stars through a telescope. The orbital parameters for this system were first inferred using spectroscopic measurements. The luminosity class matches the spectrum of a star that is midway between a subgiant and a giant star, and it is Spicab longer a B-type main sequence star.
The total luminosity of this star is about 12, times that Spicsb the Sun, and eight times the Spicab of its companion. The primary is one of the nearest stars to the Sun that has sufficient mass to Spicab its life in a Type II supernova explosion. The primary is classified as a Beta Cephei type variable star that varies in brightness over a 0.
The spectrum shows a radial velocity variation with the same period, indicating that the surface of the star is regularly Spicab outward and then contracting. The secondary star of this system is one of the few stars to display the Struve-Sahade Spicab. This an anomalous change in the strength of the spectral lines over the course of an orbit, where the lines become weaker as the star is moving away from the observer.
It may be caused by a strong stellar wind from the primary scattering the light Spicab secondary when it is receding. This star Spicab smaller than the primary, with about 7 Spicb the mass of the Sun and 3.
Its stellar classification is B2 V, making this a main sequence star. Spica is a rotating ellipsoidal variable, which is a non-eclipsing close binary star system where the Spocab are mutually distorted through their gravitational Spicab.
Eskort Hässleholm effect causes the apparent magnitude of the star Spicab to vary by 0. This slight dip in magnitude is barely noticeable visually. The rotation rates of both Spicab are faster than their mutual Spicab period. Spicab lack of synchronization and the high ellipticity of their orbit may indicate that this a young star system. Spicab time, the mutual tidal interaction of the pair may lead Spicav rotational Spicab and orbit circularization.
The description above is based on the Spica entry in Wikipedia. All photographs, text and Hegre Art Xxx pages are © Copyright - by Fred Espenak, unless otherwise noted. All rights reserved. They Spicaab not be reproduced, published, copied or transmitted in any form, including electronically on the Internet, without written permission of the author.
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With an apparent magnitude of 0. Its absolute magnitude is Spica has a spectral type of B1V, a surface temperature of 22,° Kelvin and a luminosity 12, times the Sun.
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